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| author | Michael Gottesman <mgottesman@apple.com> | 2013-06-18 20:40:40 +0000 |
|---|---|---|
| committer | Michael Gottesman <mgottesman@apple.com> | 2013-06-18 20:40:40 +0000 |
| commit | 15343990596489d6b1774bb22752c24daf319f9f (patch) | |
| tree | 6372327992717d21463372e4bc194b2d865a96b8 /clang/lib/CodeGen | |
| parent | cc0273d7845bcaab8ce9673ee2219fdd4f0c52c8 (diff) | |
| download | bcm5719-llvm-15343990596489d6b1774bb22752c24daf319f9f.tar.gz bcm5719-llvm-15343990596489d6b1774bb22752c24daf319f9f.zip | |
[multiprecision-builtins] Added missing builtin __builtin_{add,sub}cb for {add,sub} with carry for bytes.
I have had several people ask me about why this builtin was not available in
clang (since it seems like a logical conclusion). This patch implements said
builtins.
Relevant tests are included as well. I also updated the Clang language extension reference.
rdar://14192664.
llvm-svn: 184227
Diffstat (limited to 'clang/lib/CodeGen')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index bd5afb6d178..90b8ebc48c6 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -1345,10 +1345,12 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD, StringRef Str = cast<StringLiteral>(AnnotationStrExpr)->getString(); return RValue::get(EmitAnnotationCall(F, AnnVal, Str, E->getExprLoc())); } + case Builtin::BI__builtin_addcb: case Builtin::BI__builtin_addcs: case Builtin::BI__builtin_addc: case Builtin::BI__builtin_addcl: case Builtin::BI__builtin_addcll: + case Builtin::BI__builtin_subcb: case Builtin::BI__builtin_subcs: case Builtin::BI__builtin_subc: case Builtin::BI__builtin_subcl: @@ -1382,12 +1384,14 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD, llvm::Intrinsic::ID IntrinsicId; switch (BuiltinID) { default: llvm_unreachable("Unknown multiprecision builtin id."); + case Builtin::BI__builtin_addcb: case Builtin::BI__builtin_addcs: case Builtin::BI__builtin_addc: case Builtin::BI__builtin_addcl: case Builtin::BI__builtin_addcll: IntrinsicId = llvm::Intrinsic::uadd_with_overflow; break; + case Builtin::BI__builtin_subcb: case Builtin::BI__builtin_subcs: case Builtin::BI__builtin_subc: case Builtin::BI__builtin_subcl: |
